koopan regional laterites located in north east of shiraz, fars province.the rock strata, koopan laterits set on neyriz ophiolites that these ophiolites are actually part of a series zagros ophiolite with of upper cretaceous age. these laterites are covered with nummulitic limestone equivalent jahrom formation with eocene age. the lateritization should be occurred after the upper cretaceous in ...

The Jurassic ophiolites in the Northern Apennines and Western Alps represent fossil mid-ocean ridge (MOR) oceanic lithosphere that formed Mesozoic Ligurian-Piedmont Ocean Basin (LPOB). Their sedimentary covers include chaotic rock units containing ophiolite-derived material. processes of formation lithostratigraphic position these remain a matter debate, unlike their counterparts Apennines. Thi...

The Jurassic ophiolites in the Northern Apennines and Western Alps represent fossil mid-ocean ridge (MOR) oceanic lithosphere that formed Mesozoic Ligurian-Piedmont Ocean Basin (LPOB). Their sedimentary covers include chaotic rock units containing ophiolite-derived material. processes of formation lithostratigraphic position these remain a matter debate, unlike their counterparts Apennines. Thi...

A field campaign targeting high pH, H2-, and CH4-emitting serpentinite-associated springs in the Zambales and Palawan Ophiolites of the Philippines was conducted in 2012-2013, and enabled description of several springs sourced in altered pillow basalts, gabbros, and peridotites. We combine field observations of pH, temperature, conductivity, dissolved oxygen, and oxidation-reduction potential w...

The connection between the North China Craton (NCC) and contiguous cratons is important for the configuration of the Nuna supercontinent. Here we document a new Paleoproterozoic high-pressure (HP) complex dominated by garnet websterite on the northern margin of the NCC. The peak metamorphism of the garnet websterite was after ∼1.90 Ga when it was subducted to eclogite facies at ∼2.4 GPa, then e...

Subduction initiation processes, such as those evidenced in the Izu-Bonin-Mariana (IBM) forearc crust are a key feature of modern-style plate tectonics. However, evidence for this process Precambrian is limited, due to scarcity ophiolite suites and particular lack typical complete ophiolitic sequences similar observed Phanerozoic ophiolites. Mineral analyses olivine, orthopyroxene, chrome spine...

Abstract In shallow-water limestones of the Plassen Formation in Tirolic nappe Northern Calcareous Alps, bauxite was formed on karstified and tilted platform margin grainstones to boundstones around ?Kimmeridgian/Tithonian boundary, or Early Tithonian as proven by Protopeneroplis striata Weynschenk, Labyrinthina mirabilis Salpingoporella pygmaea Gümbel. The established top obducted ophiolite st...

Two of this volume’s coeditors persuaded the third into commenting on his own paper. There are three clear alternatives as a “classic paper” on California terranes. In the first of these, Hamilton (1969) first mentioned the North American Cordillera as a collage of exotic terranes and argued that the continental margin of North America was built out from the shelf edge by material carried to it...